Genome-wide

全基因组
  • 文章类型: Journal Article
    本研究的重点是分析大麻UGT基因家族,在植物的代谢和次生代谢产物的糖基化中起着至关重要的作用。该研究使用保守的植物次级产物糖基转移酶(PSPG)基序氨基酸序列鉴定了125个UGT。这些UGT基因通过系统发育分析分为17组(A-Q),显示它们在水稻10条染色体上的分布。CsUGT基因家族的扩展归因于串联和重复事件,正如基因复制分析所表明的。此外,研究发现CsUGT启动子区存在多种与植物激素和应激反应相关的顺式调控元件。亚细胞定位分析显示CsUGT存在于细胞质中,叶绿体,和核。研究表明,CsUGT在各种生物过程中发挥着重要作用,细胞成分,和基因本体论分析强调的分子功能。此外,京都基因和基因组百科全书(KEGG)途径分析表明,一些CsUGTs与次级代谢产物的生物合成有关。这项研究为基因组组织提供了有价值的见解,进化史,以及紫花苜蓿UGT基因的潜在调控机制。为进一步探索它们在植物代谢和逆境响应中的具体生物学作用和潜在应用奠定了基础。这些发现有助于更好地理解UGT基因家族及其与水稻代谢途径的相关性。
    在线版本包含补充材料,可在10.1007/s13205-024-04025-3获得。
    The research focused on analyzing the UGT gene family in Cannabis sativa, which plays a crucial role in the plant\'s metabolism and glycosylation of secondary metabolites. The study identified 125 UGTs using conserved plant secondary product glycosyltransferase (PSPG) motif amino acid sequences. These UGT genes were categorized into 17 groups (A-Q) through phylogenetic analysis, showing their distribution across 10 chromosomes in C. sativa. The expansion of the CsUGT gene family was attributed to tandem and duplication events, as suggested by gene duplication analysis. Furthermore, the study found various cis-acting regulatory elements related to phytohormones and stress responses in CsUGT promoter regions. Subcellular localization analysis revealed that CsUGT is present in the cytoplasm, chloroplast, and nucleus. The study revealed that CsUGT plays a significant role in various biological processes, cellular components, and molecular functions as highlighted by Gene Ontology analysis. Additionally, the Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis showed that some CsUGTs are associated with the biosynthesis of secondary metabolites. This research provides valuable insights into the genomic organization, evolutionary history, and potential regulatory mechanisms of UGT genes in C. sativa. It lays the foundation for further exploration of their specific biological roles and potential applications in the plant\'s metabolism and stress responses. These findings contribute to a better understanding of the UGT gene family and its relevance to the metabolic pathways in C. sativa.
    UNASSIGNED: The online version contains supplementary material available at 10.1007/s13205-024-04025-3.
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  • 文章类型: Journal Article
    背景除了遗传易感性,职业和环境因素对前列腺癌的风险很重要。我们调查了单核苷酸多态性(SNPs)对前列腺癌发展的影响在日本,除年龄外,还包括职业和工业历史作为混杂因素,吸烟,和饮酒。方法我们纳入了210例前列腺癌患者和504例男性对照患者。我们对前列腺癌的发展进行了四种全基因组关联研究(GWAS)模式。在协会测试中,逻辑回归模型考虑了年龄,吸烟史,饮酒史,以及工业/职业分类的每种模式。结果GWAS中未检测到满足5×10-8全基因组显著性水平的SNP。使用职业史作为混杂因素,在GWAS中的长基因间非蛋白质编码RNA1824(LINC01824)和三方基序家族样2(TRIML2)基因附近发现了具有1×10-6的暗示性关联水平的SNP。GWAS中的核糖体蛋白S2假基因25(RPS2P25)基因使用工业史作为创始人。在不包括职业和工业史的GWAS中未观察到符合暗示性关联水平的SNP。结论通过将职业和工业历史添加到混杂因素中,在GWAS中检测到前列腺癌发展的SNP。对职业和工业历史的考虑可能会增加GWAS的有用性。
    Background In addition to genetic predisposition, occupational and environmental factors are important for the risk of prostate cancer. We investigated the effect of single nucleotide polymorphisms (SNPs) on the development of prostate cancer in Japan, including occupational and industrial history as confounding factors in addition to age, smoking, and alcohol drinking. Methods We enrolled 210 prostate cancer patients and 504 male control patients. We conducted four genome-wide association study (GWAS) patterns for prostate cancer development. In the association test, logistic regression models incorporated age, smoking history, alcohol consumption history, and each pattern of industrial/occupational classification. Results No SNPs satisfying the genome-wide significance level of 5×10-8 were detected in GWAS. SNPs with a suggestive association level of 1×10-6 were found near the long intergenic non-protein coding RNA 1824 (LINC01824) and tripartite motif family like 2 (TRIML2) genes in the GWAS using occupational history as a confounder and near the ribosomal protein S2 pseudogene 25 (RPS2P25) gene in the GWAS using industrial history as a confounder. No SNPs that met the suggestive association level were observed in the GWAS that did not include occupational and industrial history. Conclusion By adding occupational and industrial history to the confounding factors, there were SNPs detected in the GWAS for prostate cancer development. The consideration of occupational and industrial history may increase the usefulness of GWAS.
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  • 文章类型: Journal Article
    背景:大多数研究都集中在风险因素上,治疗,和治疗情感性精神病,一些人报道了环境空气质量和这种精神病之间的关系。尽管已经报道了精神病和基因之间的关联,研究主要探讨一种类型的精神病与一种基因之间的关联;很少发现与情感性精神病相关的基因。本研究调查了情感性精神病的遗传和环境因素。
    方法:在这项回顾性纵向研究中,从台湾生物银行选出27604名30-70岁的参与者。参与者的倾向得分是根据他们的人口统计信息计算的,并进行倾向得分匹配,将参与者分为一个实验(即,情感性精神病)和对照组的比例为1:5。Plink用于分析与情感性精神病相关的主要和次要基因表达类型,和PM2.5暴露被纳入分析。
    结果:根据广义估计方程分析结果,8个单核苷酸多态性(SNPs)属于ANK3,BDNF,CACNA1C,GRID1基因型与抑郁障碍显著相关(P<.001),其中大多数属于ANK3和CACNA1C。共有5个SNPs属于CACNA1C,GRID1和SIRT1基因型与双相情感障碍显著相关(P<0.001),大多数属于CACNA1C。环境空气污染与情感性精神病之间没有显着相关性。
    结论:CACNA1C和GRID1是抑郁症和双相情感障碍的常见SNP基因型,应考虑与情感性精神病有关。
    Most studies have focused on the risk factors, treatment, and care of affective psychosis, and several have reported a relationship between ambient air quality and this psychosis. Although an association has been reported between psychosis and genes, studies mainly explored the associations between one type of psychosis and one gene; few have identified genes related to affective psychosis. This study investigates the genetic and environmental factors of affective psychosis.
    In this retrospective longitudinal study, 27 604 participants aged 30-70 were selected from Taiwan Biobank. The participants\' propensity scores were calculated based on their demographic information, and propensity score matching was performed to divide the participants into an experimental (i.e., affective psychosis) and control group at a 1:5 ratio. Plink was used to analyze the major and minor types of gene expression related to affective psychosis, and PM2.5 exposure was incorporated into the analyses.
    According to the generalized estimating equation analysis results, 8 single nucleotide polymorphisms (SNPs) belonging to the ANK3, BDNF, CACNA1C, and GRID1 genotypes were significantly correlated with depressive disorder (P < .001), with the majority belonging to the ANK3 and CACNA1C. A total of 5 SNPs belonging to the CACNA1C, GRID1, and SIRT1 genotypes were significantly correlated with bipolar disorder (P < .001), with the majority belonging to the CACNA1C. No significant correlation was identified between ambient air pollution and affective psychosis.
    CACNA1C and GRID1 are common SNP genotypes for depressive disorder and bipolar disorder and should be considered associated with affective psychosis.
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  • 文章类型: Journal Article
    1.这项研究测量了四川白鹅种群(209个个体)的六个繁殖性状,包括生育率,鸡蛋合格率,血浆孕酮浓度(P),卵泡刺激素(FSH),催乳素(PRL)和雌激素(E2)。来自同一鹅种群(209个个体)的全基因组重测序数据用于全基因组关联研究(GWAS),该研究利用混合线性模型研究与繁殖性状相关的基因和遗传标记。使用基质辅助激光解吸电离飞行时间质谱(MALDI-TOFMS)方法确定所选SNP和单倍型的频率。总的来说,鉴定了42个与这些性状显著相关的SNP。基于与合格卵率显着相关的五个SNP构建了单倍型区块,具有单倍型CCTTAAGGAA的个体具有最低的合格卵率4。总之,这些结果为标记辅助选择改善鹅繁殖性能提供了潜在的标记,并为阐明鹅繁殖的遗传学奠定了基础。
    1. This study measured six reproduction traits in a Sichuan white goose population (209 individuals), including fertility, qualified egg rate, plasma concentrations of progesterone (P), follicle-stimulating hormone (FSH), prolactin (PRL) and oestrogen (E2).2. Whole-genome resequencing data from the same goose population (209 individuals) were used in a genome-wide association study (GWAS) utilising a mixed linear model to investigate the genes and genetic markers associated with reproduction traits. The frequency of the selected SNPs and haplotypes were determined using the Matrix-Assisted Laser Desorption Ionisation Time-Of-Flight Mass Spectrometry (MALDI-TOF MS) method.3. In total, 42 SNPs significantly associated with these traits were identified. A haplotype block was constructed based on five SNPs that were significantly associated with qualified egg rate, with individuals having the haplotype CCTTAAGGAA having the lowest qualified egg rate.4. In conclusion, these results provided potential markers for marker-assisted selection to improve goose reproductive performance and a basis for elucidating the genetics of goose reproduction.
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  • 文章类型: Journal Article
    在TRIDENT-2研究中,荷兰的所有孕妇均接受全基因组非侵入性产前检测(GW-NIPT),可选择接受全面筛查或仅接受常见三体筛查.先前的数据表明,GW-NIPT可以可靠地检测普通产科人群中的常见三体,并且该测试还可以检测其他染色体异常(其他发现)。然而,目前缺乏关于筛查其他发现的临床影响的证据.因此,我们提供了TRIDENT-2研究的随访结果,以根据有其他发现的病例的实验室和围产期结局来确定这种临床影响.在2017年4月至2019年4月期间,在402/110,739例怀孕(0.36%)中发现了其他发现。对于358个案例,起源被证明是胎儿(n=79;22.1%),(假设)局限性胎盘镶嵌(CPM)(n=189;52.8%),或母体(n=90;25.1%)。其余44人(10.9%),无法确定像差的起源。大多数胎儿染色体畸变是致病性的,并与严重的临床表型相关(61/79;77.2%)。对于CPM案例,先兆子痫的发生率(8.5%[16/189]对0.5%[754/159,924];RR18.5),与一般产科人群相比,出生体重<2.3百分位数(13.6%[24/177]vs2.5%[3,892/155,491];RR5.5)显著增加。在90个产妇发现中,12例(13.3%)为恶性肿瘤和32例(35.6%)(马赛克)致病性拷贝数变异,主要与轻度或无临床表型有关。这项大型队列研究的数据为决定是否以及如何在筛查计划中实施GW-NIPT提供了重要信息。此外,这些数据可以为具有挑战性的解释提供信息,咨询,以及其他发现的后续行动。
    In the TRIDENT-2 study, all pregnant women in the Netherlands are offered genome-wide non-invasive prenatal testing (GW-NIPT) with a choice of receiving either full screening or screening solely for common trisomies. Previous data showed that GW-NIPT can reliably detect common trisomies in the general obstetric population and that this test can also detect other chromosomal abnormalities (additional findings). However, evidence regarding the clinical impact of screening for additional findings is lacking. Therefore, we present follow-up results of the TRIDENT-2 study to determine this clinical impact based on the laboratory and perinatal outcomes of cases with additional findings. Between April 2017 and April 2019, additional findings were detected in 402/110,739 pregnancies (0.36%). For 358 cases, the origin was proven to be either fetal (n = 79; 22.1%), (assumed) confined placental mosaicism (CPM) (n = 189; 52.8%), or maternal (n = 90; 25.1%). For the remaining 44 (10.9%), the origin of the aberration could not be determined. Most fetal chromosomal aberrations were pathogenic and associated with severe clinical phenotypes (61/79; 77.2%). For CPM cases, occurrence of pre-eclampsia (8.5% [16/189] vs 0.5% [754/159,924]; RR 18.5), and birth weight <2.3rd percentile (13.6% [24/177] vs 2.5% [3,892/155,491]; RR 5.5) were significantly increased compared to the general obstetric population. Of the 90 maternal findings, 12 (13.3%) were malignancies and 32 (35.6%) (mosaic) pathogenic copy number variants, mostly associated with mild or no clinical phenotypes. Data from this large cohort study provide crucial information for deciding if and how to implement GW-NIPT in screening programs. Additionally, these data can inform the challenging interpretation, counseling, and follow-up of additional findings.
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  • 文章类型: Journal Article
    这项研究检查了单核苷酸多态性(SNP)对膀胱癌发展的影响。增加持有时间最长的职业和工业历史作为监管机构。从血液中纯化的基因组进行了基因分型,其次是SNP归因。在全基因组关联研究(GWAS)中,在逻辑回归模型中加入了几种工业/职业分类模式.评估膀胱癌发展与每个基因区域的计算的遗传评分之间的关联测试(逐基因分析)。在GWAS和基因分析中,gliomedin基因在男性膀胱癌的GWAS中满足10-5的暗示性关联水平,在全基因分析中满足10-4的暗示性关联水平.在有浸润倾向的癌症和具有强烈细胞异型性的癌症中,膀胱癌细胞核中的神经胶质细胞蛋白表达降低。据推测,神经胶质细胞蛋白酶与膀胱癌的发展有关。
    This study examined the effects of single-nucleotide polymorphisms (SNPs) on the development of bladder cancer, adding longest-held occupational and industrial history as regulators. The genome purified from blood was genotyped, followed by SNP imputation. In the genome-wide association study (GWAS), several patterns of industrial/occupational classifications were added to logistic regression models. The association test between bladder cancer development and the calculated genetic score for each gene region was evaluated (gene-wise analysis). In the GWAS and gene-wise analysis, the gliomedin gene satisfied both suggestive association levels of 10-5 in the GWAS and 10-4 in the gene-wise analysis for male bladder cancer. The expression of the gliomedin protein in the nucleus of bladder cancer cells decreased in cancers with a tendency to infiltrate and those with strong cell atypia. It is hypothesized that gliomedin is involved in the development of bladder cancer.
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  • 文章类型: Journal Article
    COVID-19造成了不可预见的情况,并扼杀了全球主要经济体。印度目睹了两次浪潮,影响了约3100万人,占全球病例的16%。迄今为止,尚未对流行病浪潮进行全面调查,以了解印度的流行病进展。
    这里,我们的目标是自SARS-CoV-2问世以来进行泛印度横截面进化分析。
    高质量的基因组,连同他们的收藏日期到2021年7月26日,都被下载了。获得了基于全基因组的系统发育。Further,使用武汉首次报道的SARS-CoV-2(NC_045512.2)作为参考进行突变分析。
    根据报告的病例和突变率,我们可以将印度疫情分为七个阶段。前第一波的平均突变率<11,在第一波中上升到17,在第二波中增加了一倍(~34)。根据突变率,VOCs和VOIs开始出现在第一波(1.5%),在第二波(96%)和第二波(100%)后占主导地位。全国范围的突变分析描绘了>50万个突变事件,在>19,300个基因组中具有四个主要突变,包括两个编码突变(尖峰(D614G),和Rdrp的NSP12b(P314L),一个沉默突变(NSP3F106F)和一个基因外突变(5'UTR241)。
    基于全基因组的系统发育可以通过多样化点将第一波后的分离株与以前的分离株区分开来,从而导致印度VOCs和VOI的发生。这种分析对于及时管理大流行至关重要。
    COVID-19 has posed unforeseen circumstances and throttled major economies worldwide. India has witnessed two waves affecting around 31 million people representing 16% of the cases globally. To date, the epidemic waves have not been comprehensively investigated to understand pandemic progress in India.
    Here, we aim for pan Indian cross-sectional evolutionary analysis since inception of SARS-CoV-2.
    High quality genomes, along with their collection date till 26th July 2021, were downloaded. Whole genome-based phylogeny was obtained. Further, the mutational analysis was performed using SARS-CoV-2 first reported from Wuhan (NC_045512.2) as reference.
    Based on reported cases and mutation rates, we could divide the Indian epidemic into seven phases. The average mutation rate for the pre-first wave was <11, which elevated to 17 in the first wave and doubled in the second wave (∼34). In accordance with mutation rate, VOCs and VOIs started appearing in the first wave (1.5%), which dominated the second (∼96%) and post-second wave (100%). Nation-wide mutational analysis depicted >0.5 million mutation events with four major mutations in >19,300 genomes, including two mutations in coding (spike (D614G), and NSP 12b (P314L) of rdrp), one silent mutation (NSP3 F106F) and one extragenic mutation (5\' UTR 241).
    Whole genome-based phylogeny could demarcate post-first wave isolates from previous ones by point of diversification leading to incidences of VOCs and VOIs in India. Such analysis is crucial in the timely management of pandemic.
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  • 文章类型: Journal Article
    背景:颅内放疗(CRT)与耳毒性有关,表现为听力损失和耳鸣.作者试图在接受CRT治疗的成年儿童癌症幸存者中确定耳毒性的临床决定因素和遗传风险因素。
    方法:Logistic回归评估了儿童癌症幸存者研究中接受CRT治疗的幸存者中耳鸣(n=1991)和听力损失(n=2198)与非遗传风险因素和合并症的关系。还进行了CRT相关耳鸣和听力损失的全基因组关联研究(GWAS)。
    结果:男性比女性更容易报告CRT相关耳鸣(9.4%vs5.4%;P=5.1×10-4)和听力损失(14.0%vs10.7%;P=0.02)。有耳鸣或听力损失的幸存者更容易出现持续性头晕或眩晕(耳鸣:P<2×10-16;听力损失:P=6.4×10-9),服用抗抑郁药(耳鸣:P=.02;听力损失:P=.01),与对照组相比,报告总体健康状况较差(耳鸣:P=1.5×10-6;听力损失:P=1.7×10-6)。CRT相关耳鸣的GWAS显示了由rs203248(P=1.5×10-9)导致的1号染色体上的全基因组显著信号,而CRT相关听力损失的GWAS将8号染色体rs332013(P=5.8×10-7)和6号染色体rs67522722(P=7.8×10-7)鉴定为几乎全基因组显著.复制分析发现,ATXN1内含子rs67522722与CRT相关的听力损失(P=.03)和从头听力损失(P=3.6×10-4)显着相关。
    结论:CRT相关的耳毒性与性别有关,一些神经耳科症状,增加抗抑郁药的使用,自我报告的健康状况较差。CRT相关听力损失的GWAS确定rs67522722,这在一个独立的幸存者队列中得到支持。
    听力损失和主观性耳鸣(感觉到噪音或耳鸣)是癌症治疗的长期副作用,在接受脑部辐射治疗的儿童中很常见。这些毒性会影响儿童发育,并可能导致严重的学习和行为困难。这项研究的数据表明,男性在接受脑部放射治疗后,听力损失和耳鸣的风险高于女性。那些产生这些毒性的人更有可能使用抗抑郁药,并报告整体健康状况较差。医疗保健提供者可以通过告知患者和/或其父母这些风险来改善对幸存者的管理。
    BACKGROUND: Cranial radiation therapy (CRT) is associated with ototoxicity, which manifests as hearing loss and tinnitus. The authors sought to identify clinical determinants and genetic risk factors for ototoxicity among adult survivors of pediatric cancer treated with CRT.
    METHODS: Logistic regression evaluated associations of tinnitus (n = 1991) and hearing loss (n = 2198) with nongenetic risk factors and comorbidities among CRT-treated survivors in the Childhood Cancer Survivor Study. Genome-wide association studies (GWASs) of CRT-related tinnitus and hearing loss were also performed.
    RESULTS: Males were more likely to report CRT-related tinnitus (9.4% vs 5.4%; P = 5.1 × 10-4 ) and hearing loss (14.0% vs 10.7%; P = .02) than females. Survivors with tinnitus or hearing loss were more likely to experience persistent dizziness or vertigo (tinnitus: P < 2 × 10-16 ; hearing loss: P = 6.4 × 10-9 ), take antidepressants (tinnitus: P = .02; hearing loss: P = .01), and report poorer overall health (tinnitus: P = 1.5 × 10-6 ; hearing loss: P = 1.7 × 10-6 ) in comparison with controls. GWAS of CRT-related tinnitus revealed a genome-wide significant signal in chromosome 1 led by rs203248 (P = 1.5 × 10-9 ), whereas GWAS of CRT-related hearing loss identified rs332013 (P = 5.8 × 10-7 ) in chromosome 8 and rs67522722 (P = 7.8 × 10-7 ) in chromosome 6 as nearly genome-wide significant. A replication analysis identified rs67522722, intronic to ATXN1, as being significantly associated with CRT-related hearing loss (P = .03) and de novo hearing loss (P = 3.6 × 10-4 ).
    CONCLUSIONS: CRT-associated ototoxicity was associated with sex, several neuro-otological symptoms, increased antidepressant use, and poorer self-reported health. GWAS of CRT-related hearing loss identified rs67522722, which was supported in an independent cohort of survivors.
    UNASSIGNED: Hearing loss and subjective tinnitus (the perception of noise or ringing in the ear) are long-term side effects of cancer treatment and are common in children treated with radiation to the brain. These toxicities can affect childhood development and potentially contribute to serious learning and behavioral difficulties. This study\'s data indicate that males are at greater risk for hearing loss and tinnitus than females after radiation therapy to the brain. Those who develop these toxicities are more likely to use antidepressants and report poorer overall health. Health care providers can improve the management of survivors by informing patients and/or their parents of these risks.
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  • 文章类型: Journal Article
    到2050年,将有超过950万拉丁美洲人受到白内障的影响。然而,在拉丁美洲人中尚未发现已知的白内障遗传风险等位基因。此外,尽管线粒体功能障碍与白内障之间存在关联,但在拉丁裔队列中尚未对白内障进行线粒体全基因组关联研究(MiWAS).我们的目的是在大规模拉丁裔人群中鉴定与白内障相关的线粒体DNA变体。
    我们进行了一项MiWAS,以确定线粒体单核苷酸多态性,这些多态性改变了LosAnglesLatino眼科研究队列中的近3500名个体的白内障风险。最大的拉丁裔特定队列,具有全面的白内障数据。我们对MiWAS的分析策略包括对白内障发生的逻辑回归,同时控制线粒体遗传祖先,年龄,和生物性别。
    我们发现MitoG228A(rs41323649)替代等位基因携带者患白内障的风险是参考等位基因携带者的五倍。与参考等位基因携带者相比,替代等位基因携带者在生命早期也发生了白内障。10倍重采样和5次重复的队列内交叉验证显示MitoG228A的作用仍然显著。
    MitoG228A在大约3500名拉丁美洲人中,白内障的风险增加了五倍。据我们所知,这是大规模拉丁裔人口的第一个白内障MiWAS。这种关联需要在一个独立的队列中进行验证。
    我们的发现假设生成研究表明,MitoG228A有可能被用作临床的危险因素和治疗的目标。通过独立队列进行验证,MitoG228A可用于估计拉丁美洲人的白内障风险,以减少以后生活中的并发症。
    Over 9.5 million Latinos could be affected by cataracts by 2050. However, no known cataract genetic risk alleles have been identified in Latinos. Moreover, no mitochondrial genome-wide association studies (MiWAS) have been conducted on cataracts in a Latino cohort despite the association between mitochondrial dysfunction and cataracts. Our purpose was to identify a mitochondrial DNA variant that associated with cataracts in a large-scale Latino population.
    We conducted an MiWAS to identify mitochondrial single-nucleotide polymorphisms that modify cataract risk in nearly 3500 individuals enrolled in the Los Angles Latino Eye Study cohort, the largest Latino-specific cohort with comprehensive cataract data. Our analytic strategy for MiWAS included logistic regression on cataract occurrence while controlling for mitochondrial genetic ancestry, age, and biological sex.
    We found that MitoG228A (rs41323649) alternative allele carriers experienced a five times greater risk for cataracts compared with reference allele carriers. Alternative allele carriers also developed cataracts earlier in life compared with reference allele carriers. Intracohort cross-validation with 10-fold resampling and five repeats showed that the effect of MitoG228A remained significant.
    MitoG228A increased risk for cataracts five-fold in approximately 3500 Latinos. To the best of our knowledge, this is the first cataract MiWAS on a large-scale Latino population. This association needs to be validated in an independent cohort.
    Our discovery hypothesis-generating study suggest MitoG228A has potential to be used as a risk factor in the clinic and as a target for therapeutics. With validation via an independent cohort, MitoG228A could be used to estimate cataract risk for a Latino to reduce complications later in life.
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  • 文章类型: Journal Article
    Aim: To investigate DNA methylation changes in placenta tissues associated with small for gestational age (SGA). Materials & methods: A prospective cohort study consisting of 1292 pregnant women from China (including 39 SGA with placenta tissues) was performed, microarray and pyrosequencing were conducted. Results: Total 2012 methylation variable positions stood out from all probes (p < 0.05; Δβ > 0.2). In SGA cases, a CpG site within ANKRD20B showed lower methylation level (p = 0.032) than appropriate for gestational age in validation cohort. Five sites within FAM198A (p = 0.047, 0.050, 0.039, 0.026 and 0.043, respectively) had a reduced methylation in male newborns whose mother had preconception folic acid supplementation. Conclusion: DNA methylation changes in placenta tissues may be associated with SGA, maternal preconception folic acid supplementation status and also be fetal sex-specific.
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